An optical tweezer that uses a Fresnel zone plate to trap instead of an objective lens could provide a cheaper and more flexible alternative to conventional optical traps. A team from the US has ...

Drawing inspiration from an insect's multi-faceted eye, University of Wisconsin-Madison engineers have created miniature lenses with vast range of vision. Their new approach created the first-ever ...

A variety of optical devices have been developed to focus X-ray radiation 3, ranging from X-ray mirrors to concentrators in the form of tapered capillaries 4, compound refractive lenses 5 and Fresnel ...

Physicists have developed a process to generate improved lenses for X-ray microscopy that provide both better resolution and higher throughput. To accomplish this, they fabricate three-dimensional ...

Fresnel zone plates (FZPs) are widely used for X-ray focusing and imaging thanks to their compactness and high resolution compared to refractive or mirror-based X-ray optics. However, achieving high ...

A photon sieve containing pinholes that follow a fractal pattern produces high quality images. optics.org talks to Walter Furlan to find out more about fractal photon sieves. A fractal photon sieve ...

Lensless imaging technology introduces computing power into the conventional optical imaging system. The lensless camera becomes compact and easy-to-build. The earliest lensless camera could be ...

A proposed space telescope would focus light primarily with a patterned sheet of metal rather than a large mirror or lens. The telescope would have amazingly sharp vision and could spot Earth-size ...